Mixing machine



13 1926. H. RUEF MIXING means Filed April 5, 1925 Y s Sheets+Sheet 1 April 13 1926.

H. RUEF MIXING mcnmn Filed April 3, 1925 3 Sheets-Sheet: 3

Patented Apr. 13, 1926.

UNITED STATES PATENT o FicE-Q HEINRICH RUEF, or" ZURICH, SWITZERLAND.

MIXING MACHINE.

Application filed Apri113,'192 5. Serial No. 20,432.

- To all whom it may concern:

Be it known that I, HEINRICH RUEF, a'citi-or zen of the Swiss Republic, residingat Zu- Switzerland, have invented an Imrich,

of which the provement in Mixing Machines,

following description, in connection with the I the second part of the mixing drum'and is turned by said device when the machine operates; thereby a lifting device is rendered superfluous and the repeated handling of the material is avoided. V

Mixing machines of this type are known in which the supporting'deviceis mounted in the frame of a driving mechanismfarranged opposite theside atwhich the ve 'hicle enters the machine and having-an axle extending through the whole machine;

this axle limits the height at which the conveying vehicle can be placed inside the supporting device. I This drawback is overcome with the mixing machine accordingto the present invention in that the supporting device is turnable in outer bearings which; do not device. This arrangement permits in a slmple manner such an adjustment of the conveying vehicle in the supporting device that the centre of the rotating system coincides as nearly as possible with the axis of rotation, so that favorable working conditions (small driving power, quietrunning and in consequence thereof a better mixing of the material and a smallerwear of the machine) are obtained.

Preferably-the supporting device is turnable on roller bearings'with which circumferential ring-shaped vbearing faces, coopcrate. 'j

Several constructional examples of this mixing machine are illustrated onthe accompanying drawings, in which: i i

' Fig. 1 shows in a vertical sectiona first moved into a supporting device surrounding r project into the interior of the supporting j chine.

'of the mixingmachine; 4

-"F1g-.2 is a section along line -II'II in Fig. 1,

constructional form of a'po'wer driven type Fig. 8 shows a' detail in a plan view,

, Figh lshows in a vertical section a second constructional formflof the power driven yp i i i I Fig. 5 is partlyjan elevation and partly a section along line VV in Fig. 4, Fig. 6 isanelevation' of a third construction'al form,

F ig. 7 i's aside view seen from the left hand side of Fig. 6 and- 4 Fig. =8 is a plan view, of Fig- 6.

(Figs. land 2) the circular body 1 comprises two flanges 2 formed by' angle iron With the first constructional :example whi,ch are rigidlyconnected to each other 7 by means of distancing rods 3 andthe trough tforming one part of the mixing drum'and the two guide rails 5. The latter arefixed withtheir ends to angle irons 6 which are connected to the flanges 2 inthe manner of chords. The circular body. 1 issupported onfour supporting rollers 7 by the flanges '2; the rollers 7 acting as spur wheels are loosely -mounted in pairs on two shafts 8.

One of the latter forms the driving shaft and is provided with a fast pulley 9 and a loose pulley 10 and with a gear wheel '8 zooperating with a toothed rim 1 of the circular b0dy. The shafts 8 extend beyond the wheels 7 and are mounted in'bearings on supporting rails '11 which are arranged. in

a recess 12 of the ground. On the'latter a pair of rails 13 is arranged transversely to the'supporting rails 11 and interrupted latter withinv the mixing ma'' between I the On the rails 13 the waggon 14 of' the usual construction having a tiltable trough 15, whichforms the second part of the mixing machine, is moved towards and away from the mixing machine. The waggon 14 'whichconveys the material to be mixed, is

pushed from the rails '13 into the guide rails 5 of thecircular'body-l, whereupon the iwaggon issecured in the required position in the circular body 1. To this end a locking device is 'provided'having-a shaft 16 ar-.

ranged "within a tube fixed to the end walls gearwheels, 8, 1

4' of the trough 4 and mounted in bushes and provided with double armed levers 17 at both ends. One of the two levers 17, to which two links 18 areconnected is provided with a handle 17 as is shown in Fig. 1. On the latter a pawl 19 is mounted which by the action of the weight loaded arm 20 is ordinarily pressed into engagement with a toothed segment 21 fixed to the adjacent end wall 4 of the trough 4. The other ends of the links 18 are coupled to levers 22 pivoted to the trough 4 by means ofa pin 23. At its free end the lever 22 is provided with an angle iron .24 and anear 25 standing (at right angles to the former. This part serves for fixing the trough 15 of the Waggon inserted in the'circular body 1 at the :respective corner on its angle iron edge from above as well as from outside to the two walls of the trough meeting each other. The four-arrestingparts 24, 25 adjusted by means of the handle 17 through the intermediaryot thetwo pairsof links 18 and which project above the fouricorners of the trough 15 secure -the "Waggon '14, which is prevented against lateraldisplace ment by theguide rails 5, in its proper position in the circular :body 1 and press the Waggon tightly against *the guide rails 5. The fixationot the Waggon 14in the circular body 1 m-ay'also beetlectedby utilizing the longitudinal edges of the'mould 4 which consists of sheet-iron, preferably by arranging fthemzto project somewhat beyond the edge of the Waggon '(trough 15) sothat-theyare pressed'against-the sides of the Waggon owing to their elasticity.

The rotation ot-the'shaft 8 by means'ot the fixed ten pulley '9 causes the rotation of the circular body 1 by the aid of the The mixing drum formed by the moulds 4 and '15 and the running 'gear of the Waggon turn thereby together 'with the circular body 1 around the axis of the latter which is central to the whole system. In the trough 4, which is symmetrical with regard to the vertical axis of the Waggon two guide blades 26 are arranged in both halves of symmetry for increasing the mixing action, which is furtheressentially increased by a strainer arranged in similar enlargements may also be provided at the end faces4. The mould 4 mayalso have a spherical shape instead of aeylindrical in itspartbetween the rings 2.

After the material has been .suificiently mixed the drive of the'circular body is interrupted whereupon the connection between the trough 15 .ot the Waggon '14 with the trough 4 of the circular body 1 is loosened by a suitable adjustment of the handle 17- after the pawl 19 has been released by means of the weight loaded arm 20. Thereupon the Waggon 14 and its trough 15 containing the mixed material is moved out of the circular body 1 which has been brought into the proper position to the rails 13 either in the direction 'in which the Waggon has been moved into the body 1 or in the opposite direction, whereupon another Waggon conveying theniaterial to be mixed is moved into the circular body 1 for mixing its contents.

lVith the constructional example illustrated in Figs. 4 and-5 the circular body l-i-s rotatably mounted in a supporting structure 30'by meansof central pins 29 fixed to spiders provided-on both sides of the 100C131. One of the pins-29 is provided withan extension and carries thereon the fast and loose pulley 9 and 10 respectively. The

guide rails 6 provided on the body .1 and second partof themixmg drum is in this case a square chest movably arranged in the radial direction .i. e. adapted to be raised and lowered, to which purpose pairs of square pins-33 provided on both walls- .4-project1into radial=guides 34 on the two spiders. At the two other walls 4 of the chest a pair ot toothed racks 431s fixedand pinions 44 cooperate with the racks 43. One pair of pinions 44 is fixed to the shaft 45 and the-other pair is fixed to the shaft 46 both shafts being mounted in side shields of theclrcular body. On both shafts 45 and 46two arms 47 and 48 respectively are 'mounted and the arms 47 and 4S areconnected together by means of links 49 extending to both sides of the chest 4. A handlever 50 is fixed with the shaft 45 and a turning-of the handelever causes .a turning movement otthe shafts 45 and 46 (the latter by the aid ofthe gear 47, 48, and thereby of the two pairs of gear wheels 44 for raising and lowering the chest 14, the lower part of which is shaped to correspondto the "form of the scuttle shaped'tipping hopper. After the mixing of the material contained in the Waggon and placed in the circular body is finished which mixing operation is GiiQCtGd by the rotation of the circular body, the Waggon, i. e. the conveying vehicle can be moved out of the circular body 1 in order to permit another Waggon charged with material to be mixed, to be brought into the circular body '1.

The dotted line 51 (Fig. .5) limiting the structure supporting frame 30 shall indicate i body,

. which serves" as a guide rail for the wheel a turntable. It is thereby assumed that the turntable is inserted in a system ofrailsso that the conveying vehicle forthe material to be mixed can'b'e ,moved in and out of the circular body in various directions depend-.

ing on the lay out of the rail system.

The afore described type of mixing machine, which may also be hand operated, are particularly suitable for mixing sand and gravel with cement, trass or lime, further for artificial manure, in glass manufactories, chemical works and so on in which the generation of dust has to be prevented. The conveying vehicle may. also be wheel barrow. f

The size of the diameter of the circular which is dependent on the type of the conveying vehicle, and the design of said body'as regards its mass is so chosen when considering the weight of the loaded vehicle that the turning masses balance themselves at least approximately and the centre of gravity of the rotating system-coincides as near as possible with the turning axis of the circular body.

In order to further achieve the intended purpose with the constructional example illustrated in Figs. 6, 7 and 8 and explained hereinafter the part ofthe drum'provided on the circular body is of a particularly suitable design to balance the weight of the rotating masses of the system.

The circular body 1 is again provided with two circular rails 2 formed by channels and rigidly connected to each other by distance rails3 and the trough 4 which forms one part of the mixing drum. .On the 'running frame A of the mixing machine two pairs of rollers 7 are mounted in bearings opposite each other, and the circular body is supported on said rollers by means of the rails 2. Between the circular rails'Q a further circular'rail2 consisting of a channel is provided on the circular body 1, which rail 2 is transformed into a toothed rim by means-of pins fixed in the shanks of the channel, a pinion beingin mesh with the toothed rim. The pinion-55 is mounted in a stationary bearing and is rigidly fixed to one wheel of a bevel wheel drive 56, the second wheel of which'is rigidly fixed to a driving wheel 57 carrying a handle 58. The turning of the driving wheel 57 by means of the handle 58 causes a rotation of the circularbody 1.

The circular body .1 is further provided with a rail 3 also consisting of a channel of the wheel-barrow 14 in which the material to be mixed is. conveyed into the circular body and away from the latter. On the side opposite to that at which the wheelbarrow is moved into the circular body the rail 8 is bent in the upward direction to a half circle which receives the wheel of the each other by means of a link.

isat the side of that trough.

wheel barrow 14 inserted in the circular body and holds it in position; the introduction of the wheel-barrow 14, the trough 15 of which contains the material to be mixed, into the circular body 1 is rendered possible by a slope B shown in'chain-dotted linesin Fig. 1

7. The circular body 1 is provided with a w v stop 59 for the two feet'14' of thewheelbarrow; these stops are provided with a recessed portion for receiving the feet the wheel-barrow. At the-circular body 1 two adjusting levers 60 are provided each of.

which is connected by means of a short link to a displaceable looking pawl 61. By a corresponding movement of the adjusting lever60 the locking pawls 61 can be moved into the illustrated position, in which they grip over the base portion of the feet formed of flat iron-inforder to secure the wheelbarrow 14 withinthe circular body 1. In Fig. 1 one'of the adjustin levers 60 is shown in dotted lines in the positionwhich it takes up beforethe wheelbarrow is moved into thezcircular body, in which position the coordinatepawl 61 does not grip the foot of the wheel-barrow; both adjusting levers 6O are turned into this position in order .to release the wheel-barrow and to permit-"its removal from the circular body 1 after the material has-been mixed. The two adjust 9 ing levers may be positively connected to f The trough 4 provided on the circular body. 1 ends in two channels 4 and4 which differfrom each other. The channel 4 is opposite to the open part of the trough 15 of the wheel-barrow 14 whilst the channel 4" The narrower channel 4 projects with its ends beyond the trough' 15 of the wheehbarrow. wider channel 4 is shorter than the respective dimension of the opening of trough 15 of the wheel-barrow. The trough 4 which gets narrower in the circumferential direction of the circular body 1 between the channel 4 andthe channel 4 is provided with correspondingly shaped end walls 4; In

the trough 4 a partition wall 4"extending in the circun'iferential direction is provided which is shaped to. form. achannel 4 at its end which corresponds to the channel 4*. The partition "wall 4 is fixed to screw threaded bolts 62 which permit of an adjustment of thewall 4 within the' trough 4 inthe radial circular body'l. 63 is a balancing weightprovided at the circular body 1.

During the operation of the mixing ma chine the circular body l' is turned in the direction indicated in Fig.6. From the trough 15 of the wheel-barrow, which forms the second part'of the mixing drum the material to be mixed is discharged into-the channel 4 of the trough 4. Owing to the length of the channel 4 the material to be The 1 direction relatively to the 1 its way from the channel i" of the mould lto the channel 4 into two parts of which only :that part moving on the outer side of the partition wall gets into the channel t, Whilst the part ofthomaterial on the inner side of the partition wall t moves towards the channel 4 of the latter; by an adequate adjustment of the partition wall 4: the amount oft-he material to be separated from .the total charge of material and to be lead over :the partition wall a can be varied in .the manner required by the balancing of the masses in the rotating system, so that the centre of gravity coincides at least approximately with the turning axis of the circular body. The vmaterial which falls freely from the trough t into the trough of the wheel-barrow 14: is then again discharged into the-channel 4;" of the trough t and so on. During the discharge of the material from the trough 15 of the wheelbarrow into the channel l" of the trough iaswell as during the return from the channels 4 and 4 the material. is upset-several times whereby the mixing action is increased. The mixin operation is further facilitated by :the spreading and the subsequent compressing of the material in a .radial direction of the circular body 1.

By means of a hose water may be supplied to the material to be mixed through the open space present between the two parts of the drum.

The 'mixing machine as illustrated in F gs. (3, 7 and 8 which may also be arranged for power drive, is particularly adapted for mixing sand. and gravel with cement, trass or lime. Instead of a wheel-barrow a waggon may be used for conveying the material to be mixed, the circular body being suitably modified to suit the trough of the Waggon which forms the second part of the drum. The circular body may also be provided with one rail only on its circumference instead of with two rails whereby the circular body then to be supported by means of rollers bearing laterally against the circular rail.

Obviously other modificationsof the subject matter of the present invention may suggest themselves within the scope of the invention.

I claim:

1. A mixing machine con'iprising a twopart mixing receptacle one of which parts constitutes the body of a vehicle, a frame, exterior of both parts and into which the vehicle may be moved and arranged to hold the parts in co-operating relation, in combination'with means exterior of both of said receptacle parts for rotating them.

2. A mixing machine comprising a receptacle adapted to co-operate with a vehicle body, rings supporting both the receptacle and the vehicle, and rollers on which said rings are supported to rotate the receptacle and vehicle while in co-operating position.

3. A mixing machine comprising an annular rotatable frame,means in said frame to support a vehicle, a trough therein hav- 'ing a large narrow channel atone end and a wide smaller channel at the other end positioned to co-operate withthe vehicle when mixing, said troughextending at its smaller wider end to the side of the vehicle.

4-. A mixing imachinecomprising an au nular, rotatable frame, means in the frame 'to support a vehicle therein, a trough secured in the frame and co-operating with the vehicle body,.said'troughhaving a large narrow channel at one end opposite the vehicle body'and a small wide channel extending to the side of saidbody, a partition wall in said trough spaced from the bottom of said troughand-having a channel at one end spaced from the large narrow channel of the trough.

5. A portable frame, rollers thereon, annular rails supported 'by' said rollers forming part of a rotatable frame, meansin the latter to support a vehicle, a trough in said rotatable frame arranged to co-operate with the vehicle body, said trough having a large narrow channel atone end opposite the vehicle body and a small wide channel at its opposite end at the side-of said'vehiclebody, means on said portable frame and co-oper- 'a-ting means on said rotatable frame to to tatethe latter with respect to the former.

In testimony whereof, I have signed ,n 'y

name to this specification.

HEINRICH inner. 

